Single-crystal copper 5N silver-plated enameled wire wound MC cartridge 1:10/15 LP vinyl cartridge cartridge transformer. Single crystal copper 5N Cu+Ag OCC degree silver enameled wire winding. Permalloy LP MC Phono step-up transformer. 10 times and 15 times boost options.
Features:
1: Years of experience in winding and boosting cattle, dissecting a variety of imported top-grade cattle, reference for reference and improvement, the number of thin turns is large, and the winding method is complicated and difficult.
2: Primary and secondary multi-wire winding, single crystal copper 5N silver-plated enameled wire winding, five wire winding.
3: Copper foil shielding inside and outside of the transformer, permalloy foil-clad iron core shielding. Permalloy cover plus two copper-plated iron covers, a total of three shields. Multiple shielding.
4: Two upper and lower double-sided circuit boards, shielded by 4 layers of copper foil.
5: Broadband response: 18Hz～190KHz -0.3DB
6: Sweden LUNDAHL Lunda impedance converter test, accurate measurement.
The above is not available to other businesses.
The use of single crystal copper wire (OCC for short) for the production of audio wire is a major breakthrough in the audio wire manufacturing industry in recent years. Scientific experiments have proved that single-crystal copper is a kind of high-purity oxygen-free copper. The entire copper rod is composed of only one crystal grain, and there is no "grain boundary" between the crystal grains. The "grain boundary" will reflect and refract the passing signal, causing signal distortion and attenuation), and therefore has a very high signal transmission performance.
5N Cu+Ag OCC single crystal copper silver-plated gold film series enameled wire is quite different from general enameled copper wire, especially in high conductivity or anti-interference characteristics and various efficiencies, high density and smooth The lacquered surface is not comparable to ordinary OFC copper and low-purity copper enameled wires, and it has a wide range of uses, especially for audio, which has a positive impact on sound quality.
The use of single crystal copper wire (OCC for short) for the production of audio wire is a major breakthrough in the audio wire manufacturing industry in recent years.
5N OCC single crystal copper enameled wire is used for audio signal cattle, vinyl MC phono boost cattle, amplifier input and output cattle, passive boost cattle, audio signal cables, etc., all have excellent performance.
This MC phono balanced transmission transformer has two lines of input and three lines of output. It is suitable for 3Ω to 100Ω MC phono. Can also be customized according to demand!
An MC phono step-up transformer is added to the front of the MM phono amplifier to become an MC phono amplifier. There are a variety of MM phono amplifier boards in this part. .
LP records are attenuated at low frequencies and pre-emphasized at high frequencies. They need to be compensated according to the RIAA equalization curve during playback. Advanced record players use MC moving coil cartridges, whose impedance is only a few ohms to a dozen ohms, and the output voltage Only 0.05~0.5mV, need to boost the cattle plus pre-amplification.
The primary impedance of the booster transformer is 3 to 5 times the output impedance of the cartridge, which is more reasonable. If the impedance of the MC cartridge is 10 ohms, the primary impedance of the transformer is 30 to 50 ohms, the transformation ratio is set to 1:10, and the impedance ratio is 40:3600. In order to avoid the interference of the electromagnetic field to the transformer, it is necessary to use double-layer or multi-layer isolation shielding of permalloy sheet and aluminum or copper to prevent interference.
It adopts high magnetic nickel material with 85% nickel content in Germany. This EI sheet has an initial permeability of 100,000 and a maximum permeability of 400,000. Used to replace the common transformer iron core can greatly improve the inductance of the transformer iron core, qualitatively improve and leap in sound quality, the best material for MC phono transformers.
Using this EI film to wind LP phono booster or signal coupling transformer with small size and large inductance has a good effect. Iron core size: length 25.5mm × height 19mm × stack thickness about 12mm, the thickness of the transformer is only 0.16mm as shown below.
This transformer is an audio LP vinyl MC phono step-up transformer. It is dismantled and dissected to improve the winding of many famous cattle. The copper foil shielding uses a complex winding method to reduce leakage inductance and distributed capacitance and expand frequency response.
parameter:
The primary copper resistance of the transformer is about 9.7Ω, and the inductance is about 1.5H.
The secondary copper resistance is about 250Ω, and the inductance is about 317H.
Frequency response: 18Hz～190KHz -0.3DB
Test Equipment:
Signal generator: Japan LEADER LAG-120A
Level meter: Japan KENEOOD VT-186
Oscilloscope: Japan KENEOOD CS-5175 100MHz
Bridge: VICTOR victory 4090B desktop precision digital.
Impedance converter: Sweden LUNDAHL Lunda converter.
The inductance is subject to the VICTOR victory 4090B desktop digital precision bridge 100HZ frequency test.
